| Blera fallax | |
|---|---|
 | |
| female | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Diptera |
| Family: | Syrphidae |
| Subfamily: | Eristalinae |
| Tribe: | Milesiini |
| Genus: | Blera |
| Species: | B. fallax |
| Binomial name | |
| Blera fallax | |
| Synonyms | |
Blera fallax, the pine hoverfly or roodkapje, is a rare species of hoverfly normally associated with mature pine trees in Northern and Central Europe. [6]
The pine hoverfly larva, which are of the rat-tailed maggot type, normally develop in damp rot holes of felled or fallen pine trees, notably the Scots pine ( Pinus sylvestris ), though it will occur with other conifers. Preference is for large stumps where there has been some heartwood softening by the fungus Phaeolus schweinitzii . Adult flies have been seen feeding on wild raspberry flowers, but little else is known about adult behaviour. [7]
In Scotland, attempts have been made on RSPB sites to create artificial rot holes in felled pine stumps. This has led to a slight increase in numbers of adults in some areas, though numbers are still very low and causing some concern. [7]
The stock dove or stock pigeon is a species of bird in the family Columbidae, the doves and pigeons. It is widely distributed in the western Palearctic.
Myolepta potens is a European hoverfly.
Xylota segnis, The Brown-toed Forest Fly, is a common species of hoverfly.
Myathropa florea, sometimes referred to as the Batman hoverfly, is a very common European and North African species of hoverfly. Adults may be seen on flowers from May to September. It is of a similar size to the common drone fly, but Myathropa are generally more yellow, with two light bands to the thorax, interrupted with a black central smudge. In museum specimens, any yellow colour soon fades to brown after death. Like most species in the tribe Eristalini, Myathropa are rather variable in size, shape and colour.
Xylota sylvarum is a common Palearctic species of hoverfly.
Criorhina berberina is a species of hoverfly. It is found in the Palaearctic from Fennoscandia South to Iberia and Italy. Ireland eastwards through Europe into Turkey and European Russia . C. berberina is a bumblebee mimic. The body has uniformly long dense pubescence, obscuring the ground-colour. There are two forms one with the pubescence more or less extensively blackish, one in which it is entirely yellow or tawny. Criorhina differ from other bumblebee mimics - Mallota, Arctophila, Pocota and Brachypalpus by the form of their antennae: the first segments are thin and form a stalk, the third segment is shorter than it is wide. In Criorhina, the face projects downwards, in contrast to Pocota and Brachypalpus.
Blera is primarily a North American genus, though there are 3 species from Europe. The genus is characterized by the following characters:
Blera eoa is a species of hoverfly normally associated with pine trees in Northern Sweden and Siberia. It is very similar to Blera fallax, except that its abdomen is all black.
Eristalini is a tribe of hoverflies. Several species are well-known honeybee mimics, such as the drone fly Eristalis tenax, while other genera such as Helophilus and Parhelophilus exhibit wasp-like patterns of yellow and black stripes, both strategies to avoid predation by visual predators such as birds.
Criorhina floccosa, is a species of hoverfly. It is found in many parts of the Palearctic including Europe.
Criorhina ranunculi, is a species of hoverfly found in the spring in many parts of Britain and Europe.
Brachypalpus valgus is a species of hoverfly found in Europe.
Xylota tarda is a Palearctic species of hoverfly.
Blera badia, the Common Wood Fly, is a common species of syrphid fly first officially described by Walker in 1849. Hoverflies get their names from the ability to remain nearly motionless while in flight. The adults are also known as flower flies, for they are commonly found around and on flowers, from which they get both energy-giving nectar and protein-rich pollen. The larvae are of the rat-tailed type, feeding on exuding sap or in the rot holes of trees.
Blera armillata, the orange-faced wood fly, is an uncommon species of syrphid fly first officially described by Osten Sacken in 1875. Hoverflies get their names from the ability to remain nearly motionless while in flight. The adults are also known as flower flies for they are commonly found around and on flowers, from which they get both energy-giving nectar and protein-rich pollen. The larvae are of the rat-tailed type, feeding on exuding sap or in the rot holes of trees.
Blera analis, the Orange-tailed wood fly, is an uncommon species of syrphid fly. It was officially described by Macquart, 1842. Hoverflies get their names from their ability to remain nearly motionless while in flight. The adults are also known as flower flies for they are commonly found around and on flowers from which they get both energy-giving nectar and protein-rich pollen. The larvae are of the rat-tailed type feeding on exuding sap or in the rot holes of trees.
Callicera rufa is a Palearctic hoverfly.
Blera notata , the Ornate Wood Fly, is a rare species of syrphid fly first officially described by Weidemann in 1830. Hoverflies get their names from the ability to remain nearly motionless while in flight. The adults, also known as flower flies for they are commonly found around and on flowers from which they get both energy-giving nectar and protein rich pollen. The larvae are of the rat-tailed type, feeding on exuding sap or in the rot holes of trees.
Blera shirakii is a species of hoverfly in the family Syrphidae.
Media related to Blera fallax at Wikimedia Commons
